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scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA

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SAS drivers can be compiled with ata support disabled.  Provide a stub so
that the drivers don't have to ifdef around wiring up
ata_scsi_dma_need_drain.

Link: https://lore.kernel.org/r/20200615064624.37317-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-06-15 08:46:23 +02:00 committed by Martin K. Petersen
parent a1e17eb03e
commit 7bb7ee8704
1 changed files with 4 additions and 0 deletions
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4
include/linux/libata.h
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@ -1092,7 +1092,11 @@ extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
#define ATA_SCSI_COMPAT_IOCTL /* empty */
#endif
extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
#if IS_ENABLED(CONFIG_ATA)
bool ata_scsi_dma_need_drain(struct request *rq);
#else
#define ata_scsi_dma_need_drain NULL
#endif
extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
unsigned int cmd, void __user *arg);
extern bool ata_link_online(struct ata_link *link);